Sanding block



FIG. 1 is a rear and left side perspective view of the sanding block showing the new design;

FIG. 2 is a front and right side perspective view thereof;

FIG. 3 is a top view of the sanding block, on a reduced scale;

FIG. 4 is a front view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a left side view thereof; and,

FIG. 8 is a bottom view thereof.

The phantom lines in the drawings illustrate aspects of the sanding block that form no part of the claimed design. 

The ornamental design for a sanding block, as shown and described. 